Improvement in roller-shafts for wringers



- around to formthe rubber roller.

mi este LnvIrH; WHITNEY, or WASHINGTON, DIsTnIo'r or COLUMBIA.

Letters Patent No. 110,098, dated December 13, 1870; antdated November 26,- 1870.

IMPRQVEMENT IN ROLLER-'SHAFTS FOR WVRINGEIRS.

The Schedule zeferredto In the Letten Pa'feht and making pnt of the aune.

I,.L'Ev1 H-. Wnmnr, of Washington, in 'the District of Columbia, have invented certain Improvements in Roller-Shafts for Wringers, of which the following is a specification, reference being had to the annexed drawing making part thereof, in which- Figure 1 represents a perspective view of my improved shaft as it appears before the rubber is molded Figure 2 is a transverse section of a complet-e roller constructed with my improved shaft.

The saine letters` are used iu both figures to indicate' identical parts.

; This invention relates to that class of rollers for' wringing-machines which is constructed with a tnetallie shaft covered by a cylinder of India rubber; and My improvement consists in the construction of the shaft, as vwill be more fully set forth hereinafter.

To enable those skilled in the artto make and use my invention I will. proceed to describe Yit specifically.

In the an nexed' drawing-.-

A represents the metallic sl|aft,- around which the rubber is to be molded and afterward vulcanized.

That portion which is covered by the rubber I propose to construct with longitudinal ribs Al and'transverse ribs A upon its surface, giving it a cellulated appearance.

In molding .thc'rubber around it will fill the cells, and in order lto .make the attachment of the rubber stlllmore s eeure I provide the longitudinal ribs with slots or perforations a a, tbroug'h'which the rubber passes to bind it to the shaft.

Shafts of this character have been heretofore constructed 'with longitudinal ribs, but it was found that as the rubber could have a lateral movement on such a shaft it would eventually work loose. .'lhisiis eutireiy avoided by the peculiar cellulated construction of my shaft, whereby all lateral movemxeut is eifectually prevented.

` Whatpl claim as my'inveutiou,- and desire to secure by Letters Patent, is

A rubber roller, the shaft A of which is constructed with perforated and slotted longitudinal ribs A.l a and transverse ribsA, substantially as `set forth.

In testimony whereof, I have signed my name to this specilica'tion in the presence of two subscribing witnesses.

L. H. WHITNEY.

Witnesses:

EDM. F. BROWN, WM. F. HoLTzMAN. 

